/* Declarations for getopt.
   Copyright (C) 1989, 1990, 1991, 1992, 1993 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify it
   under the terms of the GNU General Public License as published by the
   Free Software Foundation; either version 2, or (at your option) any
   later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */

#ifndef _GETOPT_H
#define _GETOPT_H 1

#ifdef	__cplusplus
extern "C" {
#endif

	/* For communication from `getopt' to the caller.
	   When `getopt' finds an option that takes an argument,
	   the argument value is returned here.
	   Also, when `ordering' is RETURN_IN_ORDER,
	   each non-option ARGV-element is returned here.  */

	extern char* optarg;

	/* Index in ARGV of the next element to be scanned.
	   This is used for communication to and from the caller
	   and for communication between successive calls to `getopt'.

	   On entry to `getopt', zero means this is the first call; initialize.

	   When `getopt' returns EOF, this is the index of the first of the
	   non-option elements that the caller should itself scan.

	   Otherwise, `optind' communicates from one call to the next
	   how much of ARGV has been scanned so far.  */

	extern int optind;

	/* Callers store zero here to inhibit the error message `getopt' prints
	   for unrecognized options.  */

	extern int opterr;

	/* Set to an option character which was unrecognized.  */

	extern int optopt;

	/* Describe the long-named options requested by the application.
	   The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
	   of `struct option' terminated by an element containing a name which is
	   zero.

	   The field `has_arg' is:
	   no_argument		(or 0) if the option does not take an argument,
	   required_argument	(or 1) if the option requires an argument,
	   optional_argument 	(or 2) if the option takes an optional argument.

	   If the field `flag' is not NULL, it points to a variable that is set
	   to the value given in the field `val' when the option is found, but
	   left unchanged if the option is not found.

	   To have a long-named option do something other than set an `int' to
	   a compiled-in constant, such as set a value from `optarg', set the
	   option's `flag' field to zero and its `val' field to a nonzero
	   value (the equivalent single-letter option character, if there is
	   one).  For long options that have a zero `flag' field, `getopt'
	   returns the contents of the `val' field.  */

	struct option
	{
#if	__STDC__
		const char* name;
#else
		char* name;
#endif
		/* has_arg can't be an enum because some compilers complain about
		   type mismatches in all the code that assumes it is an int.  */
		int has_arg;
		int* flag;
		int val;
	};

	/* Names for the values of the `has_arg' field of `struct option'.  */

#define	no_argument		0
#define required_argument	1
#define optional_argument	2

//#if __STDC__ || defined(PROTO)
//#if defined(__GNU_LIBRARY__)
/* Many other libraries have conflicting prototypes for getopt, with
   differences in the consts, in stdlib.h.  To avoid compilation
   errors, only prototype getopt for the GNU C library.  */
	extern int getopt(int argc, char* const* argv, const char* shortopts);
	//#endif /* not __GNU_LIBRARY__ */
	extern int getopt_long(int argc, char* const* argv, const char* shortopts,
		const struct option* longopts, int* longind);
	extern int getopt_long_only(int argc, char* const* argv,
		const char* shortopts,
		const struct option* longopts, int* longind);

	/* Internal only.  Users should not call this directly.  */
	/* extern int _getopt_internal (int argc, char *const *argv,
					 const char *shortopts,
						 const struct option *longopts, int *longind,
					 int long_only); */
					 //#else /* not __STDC__ */
					 //extern int getopt ();
					 //extern int getopt_long ();
					 //extern int getopt_long_only ();

					 //extern int _getopt_internal ();
					 //#endif /* not __STDC__ */

#ifdef	__cplusplus
}
#endif

#endif /* _GETOPT_H */

